US Secretary of State Mike Pompeo will visit South Korea this week to personally explain the outcome of the US-North Korea summit to his South Korean counterparts, an official from Seoul's presidential office Cheong Wa Dae said Tuesday.

The top US diplomat is set to arrive here Wednesday, one day after the historic summit between US President Donald Trump and North Korean leader Kim Jong-un in Singapore.

"He is expected to visit Cheong Wa Dae on (June) 14th and explain the outcome of the North Korea-US summit," the Cheong Wa Dae official told reporters, while speaking on condition of anonymity.

US Secretary of State Mike Pompeo speaks during a press briefing Monday in Singapore one day before President Donald Trump will meet with North Korean leader Kim Jong-un. (EPA-Yonhap)

The Trump-Kim summit, the first of its kind, is widely expected to focus on ridding the North of its nuclear weapons in exchange for a security guarantee that many here believe could require a formal end to the 1950-53 Korean War.

Seoul and Pyongyang technically remain at war as the Korean War ended only with an armistice.

South Korean President Moon Jae-in and Kim have agreed to seek an official end to the war and to replace the Korean armistice with a peace regime. (Yonhap)